Description of problem: clients register to capsule are unable to properly retrieve the GPG key of a repository from the capsule. Version-Release number of selected component (if applicable): satellite-capsule-6.4.0-15.el7sat.noarch satellite-common-6.4.0-15.el7sat.noarch satellite-installer-6.4.0.7-2.el7sat.noarch How reproducible: Everytime Steps to Reproduce: 1. Configure repository with custom gpg key 2. Publish and Promote repository 3. Build and/or subscribe system 4. Attempt to install any package from the custom repository Actual results: Package fails to install with the following errors warning: rpmts_HdrFromFdno: Header V3 RSA/SHA1 Signature, key ID 64de1bb2: NOKEY Retrieving key from https://<CAPSULE SERVER NAME>/katello/api/repositories/10/gpg_key_content Expected results: Download of custom GPG key from capsule as well as package installation.